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US 5,763,040 AGranted
Rug and carpet underlays substantially impervious to liquids
AssigneeE. I. Du Pont de Nemours and Company
InventorsPeter Michael Murphy, Edward James Greenwood, Joyce Monson Materniak
Life of this patent
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Abstract
A carpet underlay comprising a fibrous nonwoven substrate composed of natural or synthetic fibers having in or on it a repellent finish which makes said substrate substantially imprevious to liquids, and a carpet having an underlay substantially impervious to liquids affixed to the carpet back rendering said carpet substantially impervious to liquids are disclosed.
Claims9
A tufted pile carpet comprising:
- a) a primary backing having a surface tufted with pile yarns and an underside to which a water permeable latex has been applied;
- b) an optional water permeable secondary backing having a surface and an underside, wherein the surface of the secondary backing is adhered to the underside of the primary backing;
- and
- c) an underlay having a surface and an underside, wherein the surface of said underlay is coated with a pressure sensitive adhesive which cures at ambient temperature and affixed to the underside of either the secondary backing or the primary backing, and said underlay comprises a nonlatex fabric, said fabric being substantially impervious to liquids,
- wherein said carpet is substantially impervious to liquids.
2 more elements
Dependencies are inferred from the claim text.